formbook | 5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8

General

Target

5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe
Size

305KB
MD5

ffa3fb48a339894ea095d4daf804011c
SHA1

1d9466444dad77922aec5a800fef77b83b715c18
SHA256

5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8
SHA512

6327a1b44a08446a6d21a5357d833187fc575bbf570f3e324c27f8545a2f458c4fa057b88b1a0dae5fcfee0c9852f94615b011fdb5341afaab6dcde55e6bc05e

Score

10^/10

formbook hx237 persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

3.8

Campaign

hx237

Decoy

repuestosmamparaselsur.com

sakai-yukiko.com

getdistrict.com

hideinplainflight.info

yamaer.com

hoosholic-boy.com

thecopenhagencopywriter.com

ledressingdescompulsives.com

xn--h3t926bkqa394a.com

nvcxr.com

zhangbin2016.com

ajsfibresolutions.net

229riverbendlane.com

gnimble.com

pichacola.com

kochang.online

fishonfellowship.com

mandarinassinpepitas.com

drinkopr.win

silverm.cloud

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1768-71-0x000000000041B610-mapping.dmp	formbook
behavioral1/memory/1768-70-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/1768-75-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/1768-83-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/1908-87-0x0000000000080000-0x00000000000AA000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

Processes:

cnxuoiren.execnxuoiren.exe

pid process

844 cnxuoiren.exe
1768 cnxuoiren.exe

pid	process
844	cnxuoiren.exe
1768	cnxuoiren.exe

Drops startup file 2 IoCs

Processes:

5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe	5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe	5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe

Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid process

1548 cmd.exe
1548 cmd.exe

pid	process
1548	cmd.exe
1548	cmd.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.execontrol.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Software\Microsoft\Windows\CurrentVersion\Run\cnxuoirenmcxcz = "cmd /c type C:\\Users\\Admin\\AppData\\Local\\Temp\\cnxuoirenmcxcz.txt \| cmd"	reg.exe
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	control.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\KTXDSFWH5RF = "C:\\Program Files (x86)\\L8ptdb08\\colorcpl2d3.exe"	control.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

cnxuoiren.execnxuoiren.execontrol.exe

description	pid	process	target process
PID 844 set thread context of 1768	844	cnxuoiren.exe	cnxuoiren.exe
PID 1768 set thread context of 1216	1768	cnxuoiren.exe	Explorer.EXE
PID 1768 set thread context of 1216	1768	cnxuoiren.exe	Explorer.EXE
PID 1908 set thread context of 1216	1908	control.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

control.exe

description ioc process

File opened for modification C:\Program Files (x86)\L8ptdb08\colorcpl2d3.exe control.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\L8ptdb08\colorcpl2d3.exe	control.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

control.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-4084403625-2215941253-1760665084-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	control.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.execnxuoiren.execnxuoiren.execontrol.exe

pid	process
992	5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe
992	5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe
844	cnxuoiren.exe
844	cnxuoiren.exe
1768	cnxuoiren.exe
1768	cnxuoiren.exe
1768	cnxuoiren.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe
1908	control.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

cnxuoiren.execontrol.exe

pid process

1768 cnxuoiren.exe
1768 cnxuoiren.exe
1768 cnxuoiren.exe
1768 cnxuoiren.exe
1908 control.exe
1908 control.exe

pid	process
1768	cnxuoiren.exe
1768	cnxuoiren.exe
1768	cnxuoiren.exe
1768	cnxuoiren.exe
1908	control.exe
1908	control.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.execnxuoiren.execnxuoiren.execontrol.exe

description	pid	process
Token: SeDebugPrivilege	992	5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe
Token: SeDebugPrivilege	844	cnxuoiren.exe
Token: SeDebugPrivilege	1768	cnxuoiren.exe
Token: SeDebugPrivilege	1908	control.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1216 Explorer.EXE
1216 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1216 Explorer.EXE
1216 Explorer.EXE

pid	process
1216	Explorer.EXE
1216	Explorer.EXE

pid	process
1216	Explorer.EXE
1216	Explorer.EXE

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.execmd.execnxuoiren.execmd.execnxuoiren.execontrol.exe

description	pid	process	target process
PID 992 wrote to memory of 1548	992	5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe	cmd.exe
PID 992 wrote to memory of 1548	992	5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe	cmd.exe
PID 992 wrote to memory of 1548	992	5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe	cmd.exe
PID 992 wrote to memory of 1548	992	5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe	cmd.exe
PID 1548 wrote to memory of 844	1548	cmd.exe	cnxuoiren.exe
PID 1548 wrote to memory of 844	1548	cmd.exe	cnxuoiren.exe
PID 1548 wrote to memory of 844	1548	cmd.exe	cnxuoiren.exe
PID 1548 wrote to memory of 844	1548	cmd.exe	cnxuoiren.exe
PID 844 wrote to memory of 960	844	cnxuoiren.exe	cmd.exe
PID 844 wrote to memory of 960	844	cnxuoiren.exe	cmd.exe
PID 844 wrote to memory of 960	844	cnxuoiren.exe	cmd.exe
PID 844 wrote to memory of 960	844	cnxuoiren.exe	cmd.exe
PID 960 wrote to memory of 880	960	cmd.exe	reg.exe
PID 960 wrote to memory of 880	960	cmd.exe	reg.exe
PID 960 wrote to memory of 880	960	cmd.exe	reg.exe
PID 960 wrote to memory of 880	960	cmd.exe	reg.exe
PID 844 wrote to memory of 1768	844	cnxuoiren.exe	cnxuoiren.exe
PID 844 wrote to memory of 1768	844	cnxuoiren.exe	cnxuoiren.exe
PID 844 wrote to memory of 1768	844	cnxuoiren.exe	cnxuoiren.exe
PID 844 wrote to memory of 1768	844	cnxuoiren.exe	cnxuoiren.exe
PID 844 wrote to memory of 1768	844	cnxuoiren.exe	cnxuoiren.exe
PID 844 wrote to memory of 1768	844	cnxuoiren.exe	cnxuoiren.exe
PID 844 wrote to memory of 1768	844	cnxuoiren.exe	cnxuoiren.exe
PID 1768 wrote to memory of 1908	1768	cnxuoiren.exe	control.exe
PID 1768 wrote to memory of 1908	1768	cnxuoiren.exe	control.exe
PID 1768 wrote to memory of 1908	1768	cnxuoiren.exe	control.exe
PID 1768 wrote to memory of 1908	1768	cnxuoiren.exe	control.exe
PID 1908 wrote to memory of 1012	1908	control.exe	cmd.exe
PID 1908 wrote to memory of 1012	1908	control.exe	cmd.exe
PID 1908 wrote to memory of 1012	1908	control.exe	cmd.exe
PID 1908 wrote to memory of 1012	1908	control.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1216

C:\Users\Admin\AppData\Local\Temp\5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe
"C:\Users\Admin\AppData\Local\Temp\5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8.exe"
2⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:992

C:\Windows\SysWOW64\cmd.exe
"cmd"
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1548

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:844

C:\Windows\SysWOW64\cmd.exe
"cmd"
5⤵
- Suspicious use of WriteProcessMemory
PID:960

C:\Windows\SysWOW64\reg.exe
reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "cnxuoirenmcxcz" /d "cmd /c type "C:\Users\Admin\AppData\Local\Temp\cnxuoirenmcxcz.txt" | cmd"
6⤵
- Adds Run key to start application
PID:880

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe"
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1768

C:\Windows\SysWOW64\control.exe
"C:\Windows\SysWOW64\control.exe"
6⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe"
7⤵
PID:1012

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\82388PD5\823logim.jpeg
Filesize
61KB

MD5
176088220f3466f49644bb1038fe47f6

SHA1
dbf793a197304511b58b4c32af37d65b80059e01

SHA256
310103cb35f51cdaa2ccee73b65fccb820191f7a30487760b7f0b9be8226fcca

SHA512
a78fd652b2cf87e875eae417a0d1c3fb596f17c90c3df2cd5a966bc0e68b2e7df8258e04b9cb0cf47e7ce34abc0346ec4bcc9bebeee141af813aae8da968cb3a

Download Submit
C:\Users\Admin\AppData\Roaming\82388PD5\823logri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\82388PD5\823logrv.ini
Filesize
40B

MD5
ba3b6bc807d4f76794c4b81b09bb9ba5

SHA1
24cb89501f0212ff3095ecc0aba97dd563718fb1

SHA256
6eebf968962745b2e9de2ca969af7c424916d4e3fe3cc0bb9b3d414abfce9507

SHA512
ecd07e601fc9e3cfc39addd7bd6f3d7f7ff3253afb40bf536e9eaac5a4c243e5ec40fbfd7b216cb0ea29f2517419601e335e33ba19dea4a46f65e38694d465bf

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe
Filesize
305KB

MD5
ffa3fb48a339894ea095d4daf804011c

SHA1
1d9466444dad77922aec5a800fef77b83b715c18

SHA256
5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8

SHA512
6327a1b44a08446a6d21a5357d833187fc575bbf570f3e324c27f8545a2f458c4fa057b88b1a0dae5fcfee0c9852f94615b011fdb5341afaab6dcde55e6bc05e

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe
Filesize
305KB

MD5
ffa3fb48a339894ea095d4daf804011c

SHA1
1d9466444dad77922aec5a800fef77b83b715c18

SHA256
5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8

SHA512
6327a1b44a08446a6d21a5357d833187fc575bbf570f3e324c27f8545a2f458c4fa057b88b1a0dae5fcfee0c9852f94615b011fdb5341afaab6dcde55e6bc05e

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe
Filesize
305KB

MD5
ffa3fb48a339894ea095d4daf804011c

SHA1
1d9466444dad77922aec5a800fef77b83b715c18

SHA256
5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8

SHA512
6327a1b44a08446a6d21a5357d833187fc575bbf570f3e324c27f8545a2f458c4fa057b88b1a0dae5fcfee0c9852f94615b011fdb5341afaab6dcde55e6bc05e

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe
Filesize
305KB

MD5
ffa3fb48a339894ea095d4daf804011c

SHA1
1d9466444dad77922aec5a800fef77b83b715c18

SHA256
5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8

SHA512
6327a1b44a08446a6d21a5357d833187fc575bbf570f3e324c27f8545a2f458c4fa057b88b1a0dae5fcfee0c9852f94615b011fdb5341afaab6dcde55e6bc05e

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cnxuoiren.exe
Filesize
305KB

MD5
ffa3fb48a339894ea095d4daf804011c

SHA1
1d9466444dad77922aec5a800fef77b83b715c18

SHA256
5987fe9f952269fd60745e05998f3640516bfc8bd4a882db60683f423a2a94e8

SHA512
6327a1b44a08446a6d21a5357d833187fc575bbf570f3e324c27f8545a2f458c4fa057b88b1a0dae5fcfee0c9852f94615b011fdb5341afaab6dcde55e6bc05e

Download Submit
memory/844-74-0x0000000074A50000-0x0000000074FFB000-memory.dmp

Filesize
5.7MB

Download
memory/844-60-0x0000000000000000-mapping.dmp

Download
memory/844-64-0x0000000074A50000-0x0000000074FFB000-memory.dmp

Filesize
5.7MB

Download
memory/880-66-0x0000000000000000-mapping.dmp

Download
memory/960-65-0x0000000000000000-mapping.dmp

Download
memory/992-63-0x0000000074A50000-0x0000000074FFB000-memory.dmp

Filesize
5.7MB

Download
memory/992-55-0x0000000074A50000-0x0000000074FFB000-memory.dmp

Filesize
5.7MB

Download
memory/992-54-0x0000000075441000-0x0000000075443000-memory.dmp

Filesize
8KB

Download
memory/1012-85-0x0000000000000000-mapping.dmp

Download
memory/1216-81-0x0000000006710000-0x000000000683A000-memory.dmp

Filesize
1.2MB

Download
memory/1216-91-0x00000000041F0000-0x0000000004287000-memory.dmp

Filesize
604KB

Download
memory/1216-90-0x00000000041F0000-0x0000000004287000-memory.dmp

Filesize
604KB

Download
memory/1216-78-0x0000000004A50000-0x0000000004BF6000-memory.dmp

Filesize
1.6MB

Download
memory/1548-56-0x0000000000000000-mapping.dmp

Download
memory/1768-75-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1768-70-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1768-67-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1768-83-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1768-77-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/1768-68-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1768-71-0x000000000041B610-mapping.dmp

Download
memory/1768-80-0x0000000000200000-0x0000000000214000-memory.dmp

Filesize
80KB

Download
memory/1768-76-0x0000000000910000-0x0000000000C13000-memory.dmp

Filesize
3.0MB

Download
memory/1908-89-0x00000000008D0000-0x0000000000963000-memory.dmp

Filesize
588KB

Download
memory/1908-88-0x0000000002220000-0x0000000002523000-memory.dmp

Filesize
3.0MB

Download
memory/1908-87-0x0000000000080000-0x00000000000AA000-memory.dmp

Filesize
168KB

Download
memory/1908-86-0x0000000000E00000-0x0000000000E1F000-memory.dmp

Filesize
124KB

Download
memory/1908-82-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads